Class CPUSamplerData

java.lang.Object
com.oracle.truffle.tools.profiler.CPUSamplerData
public final class CPUSamplerData extends Object
Execution profile of a particular context.
Since:
21.3.0
See Also:

  • Method Details

    • getContextIndex

      public int getContextIndex()
      Returns:
      The index of the context this data applies to. It is the index of this data in the data list. The index is zero based and corresponds to the order of context creations on the engine.
      Since:
      24.1.0

    • getContext

      @Deprecated public com.oracle.truffle.api.TruffleContext getContext()
      Deprecated.
      in 24.1.0. Contexts are no longer stored permanently. This method will return null if the context was already collected. Use getContextIndex() to differentiate sampler data for different contexts.
      Returns:
      The context this data applies to or null if the context was already collected.
      Since:
      21.3.0

    • getThreadData

      public Map<Thread, Collection<ProfilerNode<CPUSampler.Payload>>> getThreadData()
      Returns:
      A mapping from each thread executing in the context to the ProfilerNodes describing the profile of the execution.
      Since:
      21.3.0

    • getSamples

      public long getSamples()
      Returns:
      how many samples were taken.
      Since:
      21.3.0

    • getSampleInterval

      public long getSampleInterval()
      Returns:
      what was the sampling interval.
      Since:
      21.3.0

    • getSampleBias

      public LongSummaryStatistics getSampleBias()
      The sample bias is a measurement of of how much time passed between requesting a stack sample and starting the stack traversal. This method provies a summary of said times during the profiling run.
      Returns:
      A LongSummaryStatistics of the sample bias.
      Since:
      21.3.0

    • getSampleDuration

      public LongSummaryStatistics getSampleDuration()
      The sample duration is a measurement of how long it took to traverse the stack when taking a sample. This method provides a summary of said times during the profiling run.
      Returns:
      A LongSummaryStatistics of the sample duration.
      Since:
      21.3.0

    • missedSamples

      public long missedSamples()
      Returns how may samples were missed, i.e. how many times taking a stack sample was requested but was not provided by the runtime in a timely manner.
      Returns:
      The number of missed samples.
      Since:
      21.3.0